package STUDENT.TRINHQUANGXUANDUC.OPPS.INHERISTANCE.BAI5;

abstract public class Method {
	public abstract float cong(Pheptinh obj);

	public abstract float tru(Pheptinh obj);

	public abstract float nhan(Pheptinh obj);

	public abstract float chia(Pheptinh obj);

	public abstract void Cong(Pheptinh obj);

	public abstract void Tru(Pheptinh obj);

	public abstract void Nhan(Pheptinh obj);

	public abstract void Chia(Pheptinh obj);

	public abstract boolean checkPT(Pheptinh obj);

	public abstract boolean KTchiacho0(Pheptinh obj);

	public abstract boolean ktchia0(Pheptinh obj);

}
